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Media converter with integrated local information transmission function and fault alarm signal transmission system

a local information transmission and media converter technology, applied in the direction of transmission monitoring, frequency-division multiplex, instruments, etc., can solve the problems of complex management, complicated device structure, and difficult structure to simplify, so as to simplify fault diagnosis and simplify circuit conservation

Inactive Publication Date: 2007-01-30
THE FUJIKURA CABLE WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a media converter with an integrated local information transmission function that can be used in optical networks. The converter has two transmission-reception processing sections that perform conversions between signals of an electrical network and optical network. A media independent interface section connects the two processing sections and performs data interfacing and error signal transmission. The converter can transmit and receive local information using predetermined frequencies outside the frequency bands used for data communication. The invention simplifies the structure of the converter, reduces the cost, and enables control at the subscriber's premises. The technical effects of the invention include improved local information transmission and simplified converter structure.

Problems solved by technology

However, in this type of system of the related art in which the operating state of the subscriber's media converter is monitored using an SNMP unit, even when there is only a small amount of local information (here, the local information includes control signals, status information, and interference information including at least one of twist pair cable abnormality information and power source abnormality information) to be transmitted, because the SNMP unit is required on the subscriber's side, the problem has existed that the structure of the device is made more complicated and it has proved difficult hitherto to simplify the structure.
In addition, the problem has existed that it has been necessary for an IP (Internet Protocol) address to be allocated to all of the subscriber media converters in which an SNMP unit has been mounted thus causing the management to become extremely complex.

Method used

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  • Media converter with integrated local information transmission function and fault alarm signal transmission system
  • Media converter with integrated local information transmission function and fault alarm signal transmission system
  • Media converter with integrated local information transmission function and fault alarm signal transmission system

Examples

Experimental program
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first embodiment

(First Embodiment)

[0018]The first embodiment of the present invention is described below with reference made to the drawings. FIG. 1 is a block diagram showing the structure of the media converter having an integrated local information transmission function according to the first embodiment. In FIG. 1, 10 indicates the media converter installed at the subscriber side (referred to below as the subscriber media converter). 11 indicates a transmission-reception processing section (PHY) for processing signals using a protocol at the physical layer level that comprises a transmission section (Tx) and a reception section (Rx) based on the 100 BASE-TX standard. Here, the transmission section performs 4B / 5B code conversion on input data in order that “0” and “1” have the appropriate generation frequency, and generates signals using the NRZI (Non Return to Zero Invert on ones) format. Furthermore, after a scramble operation has been carried out on these encoded signals, they are converted in...

second embodiment

(Second Embodiment)

[0024]A description will be given next of the second embodiment of the present invention. The basic structure of the media converter with an integrated local information transmission function according to the second embodiment is the same as that of the first embodiment. Accordingly, FIG. 1, which was used for the first embodiment, is also used here. Note that the control section 19 of the present embodiment controls the TX_EN and TX_ER transmitted from the media independent interface section 12 and also controls the transmission timings of the IDLE signals and HALT signals transmitted from the transmission-reception processing section 15. The control section 37 controls the TX_EN and TX_ER transmitted from the media independent interface section 32 and also controls the transmission timings of the IDLE signals and HALT signals transmitted from the transmission-reception processing section 33. The code group used in the transmission of the TX_ER and IDLE signals i...

third embodiment

[0030]A description will now be given of the third embodiment of the present invention with reference made to the drawings. FIG. 2 is a block diagram showing the structure of the media converter with an integrated local information transmission function according to the third embodiment. Note that, in FIG. 3, the same descriptive symbols are given to the same portions as in FIG. 1 which shows the structure of the media converters 10 and 30 and a description thereof is omitted here. 70 indicates the subscriber media converter while 80 indicates the station media converter. 18 indicates a power cut detecting section for monitoring the input voltage and output voltage of the voltage conversion section 20, and for detecting an abnormality and outputting a fault alarm signal when the power voltage drops below a preset alarm level. 13 indicates a layer 1 (L1) signal generating section that generates a power cut notification signal using a control signal output from the control section 19 ...

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PUM

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Abstract

There is provided media converter having an integrated local information transmission function and a fault alarm signal communication system for transmitting local information using a frequency outside the communication frequency bands for data signals. In the subscriber's media converter, based on input local information, a control section sets a transmission frequency outside the communication frequency bands and outputs a signal instructing that a transmission be made. A media independent interface section receives this signal and transmits the signal in the instructed frequency. In the station media converter, a media independent interface section detects the frequency in which the local information is transmitted from the received signal. A control section then generates local information using the detected frequency and outputs it to an SNMP unit.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a media converter having an integrated local information transmission function and a fault alarm signal transmission system that enable the transmission of local information with matching media converters to be performed by using a frequency outside the data signal communication frequency band or by controlling the sending of transmission error signals.[0003]2. Description of the Related Art[0004]A media converter converts an Ethernet signal in 10 BASE-T or 100 BASE-TX formats, which are IEEE (Institute of Electrical and Electronics Engineers) 802.3 standards, that use twist pair cable into a signal that corresponds to a 100 BASE-FX format Ethernet that uses optical fiber. In many cases, a media converter is installed at both the subscriber's premises and the station premises and these are used by being matched to each other via a local area network (referred to below as a LAN). In a cas...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04B10/08H04B10/20H04J14/00H04L12/46H04L69/40
CPCH04L12/46H04L41/06H04L41/0213H04L69/08Y04S40/00H04L69/323
Inventor YAMADA, NAOSHIYAJIMA, FUMIOUNAMI, YOSHIHARUARAI, KATSUYUKINAKAMURA, YASUSHIYOSHINO, SHOJI
Owner THE FUJIKURA CABLE WORKS LTD
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